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2a - ( 5 - 3a ) = 10

 

a = ?

 29.10.2016
 #1
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2a - ( 5 - 3a ) = 10

    2a - 5 +3a = 10

           5a - 5 =10    | + 5

                5a = 15  |:5

                 a = 3

 

laugh

 29.10.2016

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